Cheap Flights from CHI to SEA
The Cheapest Round-trip Tickets from Chicago to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 12 September 2025 | 29 September 2025 | Direct |  | RT from 217 |
The Cheapest Flights for this Month from Chicago to Seattle
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 3 September 2025 | 3 September 2025 | 1 Stop |  | RT from 809 |
| 12 September 2025 | 29 September 2025 | 1 Stop | | RT from 217 |
The Cheapest Flights from Chicago to Seattle for the Year Ahead
| Departure at | Return at | Stops | Airline | Find tickets |
|---|---|---|---|---|
| 12 September 2025 | 29 September 2025 | 1 Stop | | RT from 217 |